RESEARCH ON ELECTRICALLY SMALL ANTENNAS

Abstract

Research has shown that an improvement of the impedance behaviour of an antenna whose length is very small as compared to the wave length in free space, can be obtained by achieving a greater bandwidth of the antenna. A bandwidth enlargement of the antenna can be obtained by the effect of an additional radiation for the same input voltage. No additional radiation occurs for radiators whose height is smaller than 1/20 the wavelength in air and whose surrounding dielectric also does n t extend eyond its height. Additional radiation is obtained by using dielectric with antennas whose height is 1/20 to 1/10 of the wavelength in air. The additional radiation observed was very small. The use of dielectric caused an increase in the inductance and capacitance per unit length of the antenna which is considered as an inhomogeneous line. (Author)

Document Details

Document Type
Technical Report
Publication Date
Feb 28, 1962
Accession Number
AD0286020

Entities

People

  • H.h. Meinke

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Antennas
  • Bandwidth
  • Capacitance
  • Electrical Impedance
  • Electrically Small Antennas
  • Electromagnetic Radiation
  • Impedance
  • Inductance
  • Radiation

Fields of Study

  • Engineering

Readers

  • Electronics Engineering
  • Phased Array Antenna Design.
  • Plasma Physics / Magnetohydrodynamics

Technology Areas

  • Space